When you start the car engine, most experts say the temperature reaches around -15 ° or -20 ° Celsius. If your car is a newer fuel injection model, it will start at -30 ° C. There may only be a slight hissing sound, so starting your car in cold weather is a good idea. This saves friction on the engine – another advantage. 

If you are facing a problem while starting a car engine in winters then it must be the reason it cools down. You can buy a ar engine preheater for your cars to make it winter-ready.

Driving.ca goes a step further and offers to start your car when the temperature reaches zero. This may be truer for older cars that do not inject fuel. However, block heaters seem to work best for most people in very cold weather. Otherwise, using block heaters, if they are soft enough, can lose energy.

However, if you have a diesel engine, you may need to turn on the heater in warmer winter temperatures. Diesel engines can be more difficult to start even in slightly cold weather. Contact a repair shop like Bemac for more information.

How long do I have to use the vehicle heater unit?

The jury somehow didn't address this matter. The NRC recommends starting the car two hours before driving in cold weather. CAA in Manitoba, which can get pretty cold, says two hours is not enough. This is especially true in temperatures of -30 ° C. They suggest running your car for four hours when it's this cold.